Brush



Sept. 4, 1928. 1,683,456

' C. E. FROST BRUSH Filed Oct. 18. 1926 Patented Sept. ll, 192$.

treats stca.

CLINTON E. FROST, OF OHIPPEWA LAKE, OHIO, ASSIGNOJB, TO THE SPECIALTYMANU- FACTURING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

BRUSH.

Application filed October 18, 1926. Serial No. 142,304.

The objects of the invention are to provide an improved disc shapedbrush having radially directed bristles or brush members, securedbetween rigid metal discs forming a central support or hub therefor. Thebrush belongs to the type in which a multiple number of similar discsare mounted upon a common mandrel and secured thereon by suitableclamping means to form a unitary structure.

The present improvements relate to the means for securing the metallicdiscs to the bristles in such a manner that the plates and bristles areso strongly interlocked that when assembled upon a mandrel or if usedsingly for any purpose they can not be separated except by the use of atool and unusual efi'ort to pry them apart.

The locking device is simple in the construction, and can bemanufactured quickly in large production by means of dies and isefficient for general use.

The invention is hereinafter more fully described, illustrated in theaccompanying drawings, and specifically pointed out in the claim.

In the accompanying drawings Fig. 1 is a side elevation of the device;Fig. 2 is an edge view thereof Fig. 3 is a central vertical section;Fig. 4 is a vertical section on line aa, Fig. 1. Fig. 5 is a perspectiveof one of the metal clamping discs showing the locking lugs thereon.

In these views, A, A, are the radially directed bristles, mountedbetween the central plates B, B, having the central openings C, C,through which a mandrel is passed.

In larger brushes the bristles may be doubled upon themselves and a wireD may be passed through the loop or the loop and wire may be dispensedwith as may bedesired.

The plates are provided with regularly spaced, pointed lugs E. E, whichproject inwardly therefrom, and the lugs are formed by stamping themfrom the sheet metal plates, thus leaving spaced triangular openings F,F, therein.

The plates are applied to the bristles with enter the openings F, F, inthe opposite plate,

thus substantially filling these openings and providing a smooth outersurface, as shown for the plates.

It is not necessary, however, that the lugs on one plate should enterthe openings in opposite plates because they may be clinched over theouter side of said bristle body, and when the lug is clinched upon thebristles the plates and bristles are securely held in place.

The extremities of the lugs are pointed to make it possible to drivethem through the bristle body.

Having described the invention, what I claim as new and desire to secureby Letters Patent is:

As an article of manufacture, a brush section, comprising a disc shapedbristle body having a central opening and a pair of sheetmetal clampingplates between which said bristle body is secured, and locking means forsaid body and plates comprising pointed lugs,

extending inwardly from the inner opposite sides of said plates, thepointed ends of said lugs being turned over the outer sides of saidbristle body, said lugs being integrally formed from said plates,leaving corresponding openings therein, the extremities of the lugs inone 'plate lying against the opposite outer face of said body andenclosed in one of said openings.

In testimony whereof I hereunto aflix my signature.

CLINTON E. FROST.

